I have installed gmtp:amd64
and jmtpfs:amd64
and on connecting via USB and granting access from the phone get error dialog:
No such interface "org.gtk.vfs.Mount" on object at path /org/gtk/vfs/mount/1
I usually transfer files via wifi but my wifi is broken and won't be replaced for a week.
I have tried bluetooth but I have issues there I'll put to another question.
There are several possible solutions: